a = 1
b = 10.5
c = "a"
f1 = a + b
f2 = c + c
# f3 = a + c
print(f"f1的值是{f1},类型是{type(f1)}")
print(f"f1的值是{f2},类型是{type(f2)}")
# print(f"f1的值是{f3},类型是{type(f3)}")
